How to Skim Coat Rough Plaster

If you want to replace or repair that old, textured ceiling or wall, then you need to apply a skim coat. Skim coating covers up textured patterns to the point of them being unnoticeable. In short, the old texture disappears. Many shun away from projects involving drywall materials. Skim coating is the simple solution. The skim coat compound easily cleans up with soap and water, which means you do not have to spend a lot of time taping off areas. You can have that smooth surface you desire by just learning this process.

Tools and Materials Needed:

  • Broad knife
  • Hawk
  • Skim coat joint compound
  • Electric drill
  • Paddle
  • Ladder
  • Plastic trash bag
  • Dish washing detergent

Step 1 – Mix the Compound

Hook up the paddle to your electric drill and mix the compound. You mix the compound to remove air bubbles. Be careful not to mix too long because that can put air bubbles back into the mix. Hold open the trash bag and run the paddle inside to clean it off.

Step 2 – Applying the Compound

To apply the skim coat, put a generous amount on the hawk. Get on the ladder and smoothly apply the compound to the ceiling. You do not have to get it completely smooth, but you do want coverage. Allow to set overnight. 

Step 3 – The Second Coat

Before the second coat, scrape all rough edges for a smooth surface. Apply a second skim coating, let dry, and the job is done.